scholarly journals A new development of non-local image denoising using fixed-point iteration for non-convex ℓp sparse optimization

PLoS ONE ◽  
2018 ◽  
Vol 13 (12) ◽  
pp. e0208503 ◽  
Author(s):  
Shuting Cai ◽  
Kun Liu ◽  
Ming Yang ◽  
Jianliang Tang ◽  
Xiaoming Xiong ◽  
...  
2013 ◽  
Vol 411-414 ◽  
pp. 1164-1169 ◽  
Author(s):  
Zhi Ming Wang ◽  
Hong Bao

Image deblurring with noise is a typical ill-posed problem needs regularization. Various regularization models were proposed during several decades study, such as Tikhonov and TV. A new regularization model based non-local similarity constrains is proposed in this paper, which used l2 non-local norms and could be easily solved by fast non-local image denoising algorithm. By combining with Bregmanrized operator splitting (BOS) algorithm, a fast and efficient iterative three step image deblurring scheme is given. Experimental results show that proposed regularization model obtained better results on ten common test images than other similar regularization model including newly proposed NLTV regularization, both in deblurring performance (PSNR and MSSIM) and processing speed.


Author(s):  
Peng Qiao ◽  
Yong Dou ◽  
Wensen Feng ◽  
Rongchun Li ◽  
Yunjin Chen

2011 ◽  
Vol 32 (16) ◽  
pp. 2145-2149 ◽  
Author(s):  
Alvaro Pardo

2008 ◽  
Author(s):  
A. Dauwe ◽  
B. Goossens ◽  
H. Q. Luong ◽  
W. Philips

2021 ◽  
pp. 1-15
Author(s):  
Monairah Alansari ◽  
Shehu Shagari Mohammed ◽  
Akbar Azam

As an improvement of fuzzy set theory, the notion of soft set was initiated as a general mathematical tool for handling phenomena with nonstatistical uncertainties. Recently, a novel idea of set-valued maps whose range set lies in a family of soft sets was inaugurated as a significant refinement of fuzzy mappings and classical multifunctions as well as their corresponding fixed point theorems. Following this new development, in this paper, the concepts of e-continuity and E-continuity of soft set-valued maps and αe-admissibility for a pair of such maps are introduced. Thereafter, we present some generalized quasi-contractions and prove the existence of e-soft fixed points of a pair of the newly defined non-crisp multivalued maps. The hypotheses and usability of these results are supported by nontrivial examples and applications to a system of integral inclusions. The established concepts herein complement several fixed point theorems in the framework of point-to-set-valued maps in the comparable literature. A few of these special cases of our results are highlighted and discussed.


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